Two-time U.S. World Cup team member Oguchi Onyewu is training with the Philadelphia Union.
Philadelphia is looking for defensive help after allowing 55 goals in 2016, second-most among the 12 teams that qualified for the MLS Cup playoffs, and the 34-year-old Onyewu is currently out-of-contract.
But Union sporting director Earnie Stewart said that the veteran isn't officially on trial with the club.
"He's here as a player who wants to keep up his level of fitness and make sure he can be ready for any moment that anybody steps in," Stewart told reporters on Tuesday.